|
|
|
|
|
""" |
|
|
a remote python shell |
|
|
|
|
|
for injection into startserver.py |
|
|
""" |
|
|
|
|
|
import os |
|
|
import select |
|
|
import socket |
|
|
import sys |
|
|
from threading import Thread |
|
|
from traceback import print_exc |
|
|
from typing import NoReturn |
|
|
|
|
|
|
|
|
def clientside() -> NoReturn: |
|
|
print("client side starting") |
|
|
host, portstr = sys.argv[1].split(":") |
|
|
port = int(portstr) |
|
|
myself = open(os.path.abspath(sys.argv[0])).read() |
|
|
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) |
|
|
sock.connect((host, port)) |
|
|
sock.sendall((repr(myself) + "\n").encode()) |
|
|
print("send boot string") |
|
|
inputlist = [sock, sys.stdin] |
|
|
try: |
|
|
while 1: |
|
|
r, w, e = select.select(inputlist, [], []) |
|
|
if sys.stdin in r: |
|
|
line = input() |
|
|
sock.sendall((line + "\n").encode()) |
|
|
if sock in r: |
|
|
line = sock.recv(4096).decode() |
|
|
sys.stdout.write(line) |
|
|
sys.stdout.flush() |
|
|
except BaseException: |
|
|
import traceback |
|
|
|
|
|
traceback.print_exc() |
|
|
|
|
|
sys.exit(1) |
|
|
|
|
|
|
|
|
class promptagent(Thread): |
|
|
def __init__(self, clientsock) -> None: |
|
|
print("server side starting") |
|
|
super.__init__() |
|
|
self.clientsock = clientsock |
|
|
|
|
|
def run(self) -> None: |
|
|
print("Entering thread prompt loop") |
|
|
clientfile = self.clientsock.makefile("w") |
|
|
|
|
|
filein = self.clientsock.makefile("r") |
|
|
loc = self.clientsock.getsockname() |
|
|
|
|
|
while 1: |
|
|
try: |
|
|
clientfile.write("{} {} >>> ".format(*loc)) |
|
|
clientfile.flush() |
|
|
line = filein.readline() |
|
|
if not line: |
|
|
raise EOFError("nothing") |
|
|
if line.strip(): |
|
|
oldout, olderr = sys.stdout, sys.stderr |
|
|
sys.stdout, sys.stderr = clientfile, clientfile |
|
|
try: |
|
|
try: |
|
|
exec(compile(line + "\n", "<remote pyin>", "single")) |
|
|
except BaseException: |
|
|
print_exc() |
|
|
finally: |
|
|
sys.stdout = oldout |
|
|
sys.stderr = olderr |
|
|
clientfile.flush() |
|
|
except EOFError: |
|
|
sys.stderr.write("connection close, prompt thread returns") |
|
|
break |
|
|
|
|
|
self.clientsock.close() |
|
|
|
|
|
|
|
|
sock = globals().get("clientsock") |
|
|
if sock is not None: |
|
|
prompter = promptagent(sock) |
|
|
prompter.start() |
|
|
print("promptagent - thread started") |
|
|
else: |
|
|
clientside() |
|
|
|
